分析了微光纤耦合器的基本光学特性，利用微纳光纤拉制平台，在线监测制作出具有良好光学性能的微光纤耦合器，对微光纤耦合器的振动信号响应特性进行分析与实验研究，并进行了行人走动引起的振动信号的响应测试，实验结果表明微光纤耦合器对外界振动具有高灵敏度的传感性能，在区域点警戒方面具有一定的应用价值。

The basic optical properties of the optical microfiber coupler are discussed. Optical microfiber couplers with well optical property are achieved by using the optical microfiber drawing system with online optical monitoring system. The vibration characteristics of the optical microfiber coupler are analyzed and studied experimentally. Person stepping signals are caught successfully by the optical microfiber coupler sensing system, which proves that the optical microfiber coupler sensing system has high sensitivity to the vibration signal and it may have potential value in the local area monitoring fields.